"Also, I read the online manual and it said that if the truck was pulled it could damage the transmission if the rear wheels were on the ground without disconnecting the drive shaft?"
This applies to automatic transmissions. Does your truck have a Hydramatic? If so that's a plus. '54 is the first year Chevy offered them.
What size wheels the truck came with and what size wheels are on it 50 some years later are usually 2 different animals. You'll just have to look.
